Implementing HAU

1. Optionally, modify the default HAU mode. By default a standard (non-high availability) upgrade is performed, unless high availability is set when specifying the boot image.
2. (S-Series) Optionally, modify the default HAU group configuration by placing slots which can be simultaneously upgraded into the same HAU group.

   (7100-Series) Assure that each chassis in the VSB configuration is assigned to its own HAU group.

3. Optionally, modify the delay between the completion of one HAU group upgrade and the start of the next HAU group upgrade.
4. Specify the system image that will boot the next time the system resets, and optionally specify whether the image will load using the standard or high availability method. If you do not specify the boot mode, the image will load based upon the default HAU mode referred to in Step 1.